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Model specific boards => Golf mk4 => Topic started by: daddy5x on 09 April 2013, 13:16

Title: thermostat?
Post by: daddy5x on 09 April 2013, 13:16

afternoon all my temp wasn't reaching 90 so ive replaced cts .niw it is getting to 70then when driving. it drops down to about 50ish till stillin traffic then goes back to 90 .now will this get better in time or is thermostat knacked thanks

Title: Re: thermostat?
Post by: brett on 09 April 2013, 13:20

pretty sure your thermostat is fried mate

Title: Re: thermostat?
Post by: Ashmond on 09 April 2013, 13:20

I know the "sports" thermostats run a lower temp but not that much!!

Is this a new or second hand part

Title: Re: thermostat?
Post by: daddy5x on 09 April 2013, 13:21

new mate GENUINE vw

Title: Re: thermostat?
Post by: Ashmond on 09 April 2013, 13:24

Take that ish back!!

Title: Re: thermostat?
Post by: dom on 09 April 2013, 13:28

Quote from: Ashmond on 09 April 2013, 13:24

Take that ish back!!

Take what back? He's replaced the temp sensor, not the thermostat...

Quote from: daddy5x on 09 April 2013, 13:16

afternoon all my temp wasn't reaching 90 so ive replaced cts .niw it is getting to 70then when driving. it drops down to about 50ish till stillin traffic then goes back to 90 .now will this get better in time or is thermostat knacked thanks

It does sound like the thermostat.

Title: Re: thermostat?
Post by: brett on 09 April 2013, 13:29

cheers dom thought i hadnt read it properly lol

Title: Re: thermostat?
Post by: daddy5x on 09 April 2013, 13:31

It does seem worse now plus I'm losing a few mpg I think

Title: Re: thermostat?
Post by: brett on 09 April 2013, 13:33

as far as i know ,defo sounds like the thermostat,and i dont know a lot lol

Title: Re: thermostat?
Post by: daddy5x on 09 April 2013, 13:39

Same lol

Title: Re: thermostat?
Post by: dom on 09 April 2013, 13:52

Quote from: daddy5x on 09 April 2013, 13:31

It does seem worse now plus I'm losing a few mpg I think

The thermostat usually opens at 90 degrees causing coolant to circulate around the system and therefore cooling the engine. It only opens at 90 degrees to allow the engine to warm up to effective operating temperature quickly.

If a thermostat is stuck open (as it sounds like yours is) then coolant is constantly circulating meaning your engine is never getting to the correct temperature unless you are stationary. When the engine is cold the fuelling is adjusted to compensate which is why your mpg will have dropped.

Title: Re: thermostat?
Post by: daddy5x on 09 April 2013, 14:03

So thermostat is knackered. No problem I'll go get 1 is there a certain 1 for turbo golf?